Rubicon Project

Leading independent sell-side platform before merger into Magnite

Rubicon Project, which rebranded as Magnite in 2020 following its merger with Telaria, was one of the pioneering independent sell-side advertising technology platforms. Founded in 2007, the company established itself as a leading supply-side platform (SSP) that enabled publishers to manage and monetize their advertising inventory through automated, real-time bidding auctions. The platform connected thousands of publishers with demand sources including ad exchanges, demand-side platforms (DSPs), ad networks, and agencies, facilitating billions of advertising transactions. As a publicly-traded company (RUBI on NYSE), Rubicon Project was known for its focus on transparency, brand safety, and providing publishers with tools to maximize their advertising revenue across display, video, and mobile inventory. The company operated one of the largest independent advertising marketplaces globally, processing over 13 trillion ad requests per month at its peak. Following the merger with Telaria in 2020, the combined entity became Magnite, creating the world's largest independent sell-side advertising platform with enhanced capabilities in connected TV (CTV) and over-the-top (OTT) advertising.